#!/usr/bin/python
# while  use
count=9
while count>0:
    print("th默认 sh打开e count is:",count)
    count=count-1

print("bye")
# while 中使用if
i=0
while i<90:
    i=i+1
    if i%2==0:
        continue
    print(i)

# while ..else  在循环条件为false时执行
count=3
while count<5:
    count++
    print(count,"is less than 5")
else:
    print(count,"is not less than 5")
